Theoretical computer science courses can help you learn algorithms, computational complexity, automata theory, and formal languages. You can build skills in problem-solving, mathematical reasoning, and algorithm analysis, that support tackling complex computational tasks. Many courses introduce tools like Python for algorithm implementation, LaTeX for typesetting mathematical documents, and software for simulating automata, allowing you to apply these concepts in practical scenarios.

University of Toronto
Skills you'll gain: iOS Development, Apple iOS, Swift Programming, Mobile Development, Animations, Application Development, Computer Vision, Image Analysis
★ 3.2 (70) · Mixed · Course · 1 - 3 Months

Epic Games
Skills you'll gain: Game Design, Video Game Development, Prototyping, Unreal Engine, System Design and Implementation, Creativity, Innovation, Storytelling
★ 4 (23) · Beginner · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Software Design Patterns, Object Oriented Programming (OOP), Software Design, Object Oriented Design, Java, Java Programming, Program Development, Computer Programming, Graphical Tools, User Interface (UI), Simulations
★ 4.8 (24) · Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Sprint Planning, Agile Methodology, User Story, Sprint Retrospectives, Backlogs, Agile Project Management, Agile Product Development, Meeting Facilitation, Continuous Improvement Process, Discussion Facilitation
★ 4.3 (50) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Shell Script, Unix Shell, File Management, User Accounts, Operating System Administration, Unix, Package and Software Management, Systems Administration, File Systems, TCP/IP, Data Maintenance, User Provisioning, Unix Commands, Midrange Computer, System Monitoring, Scripting, Disaster Recovery, System Software, System Configuration, Data Centers
★ 4.6 (30) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Java Platform Enterprise Edition (J2EE), Java Programming, Object-Relational Mapping, Java, Application Servers, Middleware, Application Deployment, Data Persistence, Event-Driven Programming, Enterprise Application Management, Server Side, Data Access, Code Reusability, Context Management, Business Logic, Query Languages, Remote Access Systems
★ 4.8 (60) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React.js, Cascading Style Sheets (CSS), JavaScript Frameworks, UI Components, Code Reusability, Restful API, HTML and CSS, Web Applications, Web Development, Javascript, Application Development, Computer Programming
★ 4.1 (14) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: File I/O, Code Reusability, Python Programming, Programming Principles, Data Dictionary, File Systems, Computational Logic, Command-Line Interface, Data Cleansing, Data Structures, Package and Software Management, File Management, Scripting, Data Manipulation, Logical Reasoning, Development Environment, Simulations
★ 4.8 (59) · Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Web Design, Web Content, Web Design and Development, Web Development, Web Presence, Information Architecture
★ 4.7 (331) · Beginner · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Node.JS, MongoDB, Javascript, Front-End Web Development, Middleware, Cascading Style Sheets (CSS), Bootstrap (Front-End Framework), jQuery
★ 4.2 (67) · Intermediate · Specialization · 1 - 3 Months

Technion - Israel Institute of Technology
Skills you'll gain: Materials science, Engineering, Scientific, and Technical Instruments, Semiconductors, Innovation, Biomedical Engineering, Chemistry, Electrical Engineering, Analytical Testing, Analytical Chemistry, Manufacturing Processes
★ 4.6 (1.2K) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Adobe XD, Prototyping, User Experience Design, Usability Testing, UI/UX Research, Figma (Design Software), User Experience, Experience Design, Presentations, Responsive Web Design, Information Architecture, User Story, Usability, Storyboarding, User Research, Design Research, Design, Visual Design, Persona (User Experience), User Interface and User Experience (UI/UX) Design
★ 4.8 (153) · Beginner · Professional Certificate · 3 - 6 Months